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r300g: Handle PIPE_BUFFER_USAGE_DONTBLOCK as intended. 

Return NULL if the BO is busy, otherwise just map it.
This commit is contained in:
Michel Dänzer 2009-09-06 18:12:14 +02:00
parent 23663ae914
commit 7b8ec0d8e7
1 changed files with 5 additions and 2 deletions
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7
src/gallium/winsys/drm/radeon/core/radeon_buffer.c
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@ -134,8 +134,11 @@ static void *radeon_buffer_map(struct pipe_winsys *ws,
(struct radeon_pipe_buffer*)buffer;
int write = 0;
if (!(flags & PIPE_BUFFER_USAGE_DONTBLOCK)) {
radeon_bo_wait(radeon_buffer->bo);
if (flags & PIPE_BUFFER_USAGE_DONTBLOCK) {
uint32_t domain;
if (radeon_bo_is_busy(radeon_buffer->bo, &domain))
return NULL;
}
if (flags & PIPE_BUFFER_USAGE_CPU_WRITE) {
write = 1;